20542175

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:347

約数の個数: 24

約数和(自身を含む): 26467056

約数和(自身を除く): 5924881

約数列:

[1, 5, 25, 43, 97, 197, 215, 485, 985, 1075, 2425, 4171, 4925, 8471, 19109, 20855, 42355, 95545, 104275, 211775, 477725, 821687, 4108435, 20542175]

約数ペア:

[(1, 20542175), (5, 4108435), (25, 821687), (43, 477725), (97, 211775), (197, 104275), (215, 95545), (485, 42355), (985, 20855), (1075, 19109), (2425, 8471), (4171, 4925)]